mirai 2.2.0

Behavioural Changes

• Simplified SSH tunnelling for distributed computing:
  • ssh_config() argument 'port' is removed, with the tunnel port now inferred at the time of launch, and no longer set by the configuration.
  • local_url() adds logical argument 'tcp' for easily constructing an automatic local TCP URL when setting daemons() for SSH tunnelling.

New Features

• Adds as.promise() method for 'mirai_map' objects. This will resolve upon completion of the entire map operation.

Updates

• mirai (in R >= 4.5) is now one of the official base R parallel cluster types.
  • register_cluster() is removed as no longer required.
  • Directly use parallel::makeCluster(type = "MIRAI") to create a 'miraiCluster'.
• call_mirai() is now user-interruptible, consistent with all other functions in the package.
  • call_mirai_() is hence redundant and now deprecated.
• with() method for daemons() now propagates ".compute" so that this does not need to be specified in functions such as mirai() within the with() clause.
• mirai() arguments ... and .args now accept environments containing variables beginning with a dot . (#207).
• 'miraiError' stack traces no longer sometimes contain an additional (internal) call (#216).
• 'miraiError' condition $call objects are now stripped of 'srcref' attributes (thanks @lionel-, #218).
• A mirai promise now rejects in exactly the same way whether or not the mirai was already resolved at time of creation.
  This avoids Shiny deep stack trace errors when the mirai had already resolved (#229).
• daemons() calls that error due to the remote launcher no longer leave the compute profile set up (#237).